If y=2x+7 were changed to y=1/2x+7, how would the graph of the new function compare with the original?

y = 2x + 7the slope is 2 and the y int is 7

y = 1/2x + 7...the slope is 1/2 and the y int is 7

the only difference is the slope. And if the original equation has a slope of 2, and it is changed to a slope of 1/2, then it will have a less steep slope. So the slope will not be as steep, but the y intercepts will be the same.

80 the answer is 80

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places