Question

Li’s brother used the work shown to determine that he must grow at most 6 inches to be able to ride the roller coaster.

48 less-than-or-equal-to h + 42. 48 minus 42 less-than-or-equal-to h + 42 minus 42. 6 less-than-or-equal-to h.

Is this correct? Explain.

Answer 1

Answer:

It is correct

Step-by-step explanation:

Given

$Height = 42\ in$ ---- Missing information

$Minimum\ Height = 48\ in$

Represent the additional height (i.e. 6 inches) with h

Required

Is $48 \le h + 42$ correct

The term at most mean less than or equal to $\le$

So, for him to grow at most 6 inches; it means that 48 inches must be less than or equal to the sum of his current height and additional height needed.

Mathematically:

$48 \le 42 + 6$

Substitute h for 6

$48 \le 42 + h$

Hence, the expression is correct.

Answer 2

Answer:

sample response

Step-by-step explanation:

No, the work is correct, but the interpretation is not. “6 is less than or equal to h” means that h is greater than or equal to 6. He must grow at least 6 inches, not at most 6 inches.