Marcus said the product of 7/8 × 1 3/4 is 9/4.

How can you tell that his answer is wrong?
[Choose one]

A;The answer must be less than 7/8.
B;The answer cannot be an improper fraction.
C;7/8 of a number cannot be greater than the number.
or
D;The denominator cannot be the same as one of the factors.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

step-by-step explanation:

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm