1.) Solve.
0.9x + 8 -3/4

4.) Solve.
4/5 (2x – 1) > 12

5.) The body mass index, I, can be used to determine an individual’s risk for heart disease. An index less than 25 indicates a low risk. The body mass index is given by the formula, or model, I= 700W , where W = weight
H2
In pounds, and H = height, in inches. Francis weighs 188 pounds and stands 69 inches tall. What is his approximate body mass index? Find an inequality describing all weights W that Francis can have and be in the low-risk category.

6.) Bayside Insurance offers two health plans. Under plan A, Giselle would have to pay the first $50 of her medical bills, plus 35% of the rest. Under plan b, Giselle would pay the first $90, but only 30% of the rest. For what amount of medical bills will plan B save Giselle money? Assume she has over $90 in bills.

7.) Solve and graph
-30 6

11.) Solve and graph
X + 5 3

12.) Solve
4x – 9 5
4 4

13.) In order to achive maximum results from aerobic exercise, one should maintain one’s heart rate at a certain level. A 40 year old woman with a resting heart rate of 70 beats per minute should keep her heart rate between 136 and 158 beats per minute while exercising. She checks her pulse for 10 secs while exercising. What should the number of beats be?
The number of beats in 10 seconds should be between ___ and ____ beats.

14.) Graph the system of inequalities.
X + 2y 0

ey? Assume she has over $90 in bills.

7.) Solve…