Mary lives 1 3/4 km from school. She rode her bike to school and back each day for 5 days. Which expression shows how to estimate the number of km she rode on her bike? A) ( 5+2 ) x 2
B) 5x (2+2)
C) (7+2) x2
D) 7x (2+2)

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36