What I am so confused

Solve for X: 39 - 7x = - 4 (7x + 7) = 4

Mary has decided to bake oatmeal cookies for her daughter's birthday. The recipe calls for 3/4 cups of sugar and it makes 20 cookies. There will be 40 guests. How much sugar will she need?

Your family is going on a road trip to Disney World! On Day 1, you traveled x miles. On Day 2, you drove 58 miles more than 3 times the miles on Day 1. On Day 3, your family went 25 fewer miles than Day 1. 1.

Mrs. Johnson spent $611 buying lunch for 78 students. If all the lunches were the same cost, about how much did she spend on each lunch?

Windless Surfing Company's marketing manager observes that if the price of designer windsocks is $45, then on average 75 windsocks are sold per month.

Is the number 5 prime composite, nethieror prime

At a basketball game, a vender sold a combined total of 225 sodas and hot dogs. The number of sodas sold was 49 more than the number of hot dogs sold. Find the number of sodas sold and the number of hot dogs sold

Is 2/8 greater than 8/12

A student gently drops a ball from different heights and measures the time it takes to fall to the ground. Which statement BEST describes why the investigation is an experimental study? A) The student does not use a control group.

2x^3y + 18xy - 10x^2y - 90y Part A: Rewrite the expression so that the GCF is factored completely.