Admission to the Chesterfield County Fair is $10. Once you are inside, it costs x dollars to go on each ride. When Naomi went to the fair last weekend, she went on 4 rides. Pick all the expressions that represent how much Naomi spent at the fair. 10+4x
40x
4+10x
10+x+x+x+x

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29