Choices are 1. A multiple of equation 1
2. The sum of equation 1 and 2
3. A sum that replaces only the coefficient of x with the sum of the coefficients of x in equation 2 and 1
4. An equation that replaces only the coefficient of y with the sum of the coefficients of y in equations 1 and 2
5.the sum of the a multiple of equation 1 and 2

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take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

step-by-step explanation:

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