Answer
a.) H(70)=19, therefore it takes 19 hours of study to get a score of 70%.
b.) 25 hours of study to get a score of 100%.
Work Step by Step
a.)
H(p)=0.20p+5
H(70)=0.20(70)+5
H(70)=14+5
H(70)=19
This means that it takes 19 hours of study to get a score of 70%.
b.)
H(p)=0.20p+5
H(100)=0.20p+5
H(100)=0.20(100)+5
H(100)=20+5
H(100)=25 hours