Answer:
117
Step-by-step explanation:
( 5x2=10, 5x9=45 ) - distributive property
then add 62 to get 117
called unit rate .
2x - 9y = 23
5x - 3y = -12x - 9y = 23
5x - 3y = -1
Answer: 40, 320 ways
8!= 8*7*6*5*4*3*2*1