me when you exercise, your pulse rate rises. recommended pulse rates vary with age and physical condition. for vigorous exercise such as jogging, the inequality 0.7(220 – a) ≤ r ≤ 0.85(220 – a) gives a target range for pulse rate r (in beats per minute), based on age a (in years). a. what is the target range for pulse rates for 31 years old? round to the nearest whole number. b. your cousin’s target rate is in the range between 140 and 170 beats per minute. what is your cousin’s age?

Note: remember to show all of the steps that you use to solve the problem. be sure to use the text box where the question mark first appears to show your mathematical work. you can use the comments field to explain your work. your teacher will review each step of your response to ensure you receive proper credit for your answer. ! i will pay you to do this for me! will mark brainliest. i am not lying solve the following problem. jana buys a dress for $25.98 and a for $14.99. the total sales tax is $2.46. a. what is the total cost of her purchase? b. if jana pays with a $50 bill, how much change should she receive?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

10x − 5y + 14 = 0 whats the answer pls