Question

(when working on a report for class, Catrinaś read that a women over the age of 40 can lose approximately 0.06 centimeters of height per year.)

a.Catrinaś aunt Nancy is 40 years old and is 5 feet 7 inches tall. Assuming her height decreases at this rat after the age 40, about how tall will she be at age 65? ( remember that 1 inch= 2.54 centimeters.)

b. Catrinaś 90-year-old grandmother is 5 feet 1 inch tall. Assuming her grandmotherś height has also decreased at this rate, about how tall was she at the age 40? Explain your reasoning.

Please help me on this one :(

Answer 1

see below

Explanation:

a. The years between 65 and 40 is

65-40 = 25 years

Multiply the decrease by the number of years

.06 *25 = 1.5 cm decrease

Change to inches

1.5 cm * 1 inch/2.54 cm =.59 inches

She will decrease .59 inches

5 ft 7 inches - .59 inches

5 ft 6.41 inches

b 90 years - 40 years = 50 years

50 * .06 =3 cm

Change to inches

3 cm * 1 inch/2.54 cm =1.18 inches

She will decrease 1.18 inches

Add this to her height now to get her height at 40

5 ft 1 inch + 1.18 inches = 5 ft 2.18 inches