How can I solve 15.75 divided by 3

5.25

Step-by-step explanation: 3 goes into 15 five times, so thats how you get 5. 3 goes into 75 25 times, so that's how you get 0.25

5 + 0.25 = 5.25

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.