Bianca deposits $10 in a savings account each Monday and an extra $20 during her birthday week. In her birthday month, she deposited a total of $60. Write an equation to find m, the number of Mondays in Bianca's birthday month

x + 10 = 39

x - 5 = 189

x + 4 = 6

Patel has 5 less than 4 times as many model cars as Horatio. He has 19 model cars in all. Let c equal the number of model cars Horatio has. Write the equation that can be used to find the number of model cars Horatio has.

4x = 12

Write the prime factorization for 96.

x - 8 = -20

10 - 2 x 4

2^2 x 5 -3

-3x = -15

3x = 42