1. {(3, 4), (4, -6), (5, -7), (3, 2), (-2, 5)} 2. {(-4, 6), (-3, 2), (1, 0), (7, 6), (8, 2)} 3. {(-3, 4), (-2, 5), (0,0), (-4, 5), (4, 8)} 4. {(-1, 2), (2, -1), (1, 3), (8, 2), (9, 5)}

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

hope to and hope that my answer is brainliest.(follow me )

yes

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