Alexa pays 7/20 of a dollar for each minute she uses her pay-as-you-go phone for a call, and 2/5 of a dollar for each minute of data she uses. this month, she used a total of 85 minutes and the bill was $31. which statements are true? check all that apply. the system of equations is x + y = 31 and 7/20x +2/5y =85 the system of equations is x + y = 85 and 7/20x +2/5y =31 to eliminate the y-variable from the equations, you can multiply the equation with the fractions by 5 and leave the other equation as it is. to eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7. she used 25 minutes for calling and 60 minutes for data. she used 60 minutes for calling and 25 minutes for data. she used 20 minutes for calling and 11 minutes for data. she used 11 minutes for calling and 20 minutes for data.

Beatrice decides she wants to babysit a few children at the same time to earn the money faster. she tells parents that if they allow her to babysit their children at her house, she will eliminate her automatic $5 tip and will give them an additional $5 discount. (a) write an equation showing the total cost for each client. identify all variables. (b) four parents bring their children to beatrice’s house at the same time for babysitting. beatrice wants to find out how many hours she must babysit the 4 children to earn exactly the $100 she needs in order to buy the present for her mother. write and solve an equation to find the number of hours. justify each step in the solution. (c) one parent decides not to drop off her child. the remaining 3 parents drop their children off at 9 a.m. two of the parents say they will be back at 1 p.m. the third parent says she will pick up her child at 2 p.m. at noon, beatrice realizes she needs feeding the 3 ch

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Someone me! if you’re smart you can solve this!