Alaina has $28 in her account. she wants to purchase a pair of shoes that costs $45. if alaina makes the purchase, which integer will represent the amount of money in alaina’s account?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]