You plug the x value into whichever function it applies to. X represents the number of shirts ordered. So for example, the first question asks the total cost if you order 57 shirts. Look at the piecewise function. If says is x>50 (or equal), you use the equation 14x + 20. 57 is greater than 50 so plug it into the equation. (14)(57) + 20 = 818. You should be able to do the rest now. If you have any more questions, you can ask.
7.60, 1.90 times 3 is 5.7 and then you add alicias money to that and it makes 7.6
250 degree left because the is facing to the right if it has a 24 foot utility pole cast
7^2 x cube root 7
= 7^2 x 7^1/3
= 7^2+1/3
= 7^7/3