MTH 1W1 Unit 3 Test: Solving Equations
Name
Communication
1. Casey is 2 years younger than her sister. The sum of their ages is 16. Write a simplified equation you can use to
[2]
find their ages.
a)
Write a "let" statement:
b) Write an equation and SIMPLIFY. DO NOT SOLVE.
16-2=

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

What can each term of the equation be multiplied by to eliminate the fractions before solving? x – + 2x = + x 2 6 10 12

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.