Question

Janine charges $8.25 per hour to walk dogs. She walks dogs for 3 hours on Saturday and 4 hours on Sunday. She calculates her total pay to be $57.75. Which equation could be used to check the reasonableness of her total?
A. 8 × 7 = 56
B. 9 × 7 = 63
C.10 × 7 = 70
D. 8 × 10 = 80

Answer 1

use linear cocepts

8×10=80