Oliver needs to save at least $1500 to buy a computer. he has already saved $650. how much more does he need to save? write and solve an inequality. a) x + 650 ≥ 1500; x ≥ 850 b) x + 650 ≤ 1500; x ≤ 850 c) x + 1500 ≤ 650; x ≤ -850 d) x + 1500 ≥ 650; x ≥ -850 submit hint calc

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15