Select the correct answer. To solve this system of equations using substitution, what could be substituted in place of yin the first equation?
4x = 5 - 2y
y-2x = 7
OA. 7 - 21
ОВ.
42 - 5
5 - 4
OD. 21 + 7
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Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15