During the summer between tenth grade and eleventh grade, a student experienced a growth spurt and grew from 67 inches to 72 inches. by what percent did the student's height increase?

  about 7.5%

Step-by-step explanation:

The percentage change is calculated from ...

  pct change = ((new value) - (old value))/(old value) × 100%

  = (72 -67)/72 × 100%

  ≈ .07463 × 100%

  ≈ 7.5%

The student's height increased by about 7.5%.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.