Algebra 1 1st Mid 9 Weeks (Exact DMAC)

Which equation is equivalent to S = Ph + 2B when solved for B?

• B = (S - Ph)/2

• B = 2S/Ph

• B = SPh/2

• B = (S - 2)/Ph

Which inequality is equivalent to -3x + 2y > 5y + 9?

• y > x + 3

• y > -x - 3

• y < x - 3

• y < -x - 3

Which of the following is equivalent to 3x - 4y = 6?

• y = -6/7x

• y = 3/4x

• y = 4/3x + 2

• y = 3/4x - 3/2

A sequence is defined by f(1) = 27 and f(n) = 1/3 f(n - 1) for each whole number n, where n > 1. What are the first four terms of the sequence?

• 27, 9, 3, 1

• 27, 81, 243, 729

• 1/3, 28/3, 55/3, 82/3

• 1/3, 1/81, 1/2.187, 1/59.049

A sequence can be generated by using the equation shown, where a₁ = 5 and n is a whole number greater than 1. aₙ = -3 + a₍ₙ₋₁₎ What are the first four terms in the sequence?

• -3, 2, 7, 12

• 5, 2, -1, -4

• -3, -15, -75, -375

• 5, 8, 11, 14

The first six terms in a geometric sequence are shown, where a₁ = -4. -4, -16, -64, -256, -1,024, -4,096, ... Based on this information, which equation can be used to find the nth term in the sequence, aₙ?

• aₙ = -4n

• aₙ = -(4)ⁿ

• aₙ = -n²

• aₙ = (-4)ⁿ

• The initial deposit in the investment account was $1,581.

• The amount of money in the investment account increases 102% each year.

• The initial deposit in the investment account was $1,550.

• The amount of money in the investment account decreases 2% each year.

What value of m makes the equation (2/3)(m - 9) = (1/3)(m - 27) true?

• -9

• -3

• -1

• -6

What is the solution to the equation 7w - 2(w - 9) = 4 - 8(w + 2)?

• w = -26/9

• w = -10/9

• w = 15/13

• w = -30/13

The graph of a linear function is shown. Which function best represents the relationship shown in the graph?

• y = -3/5x - 5

• y = -3/5x - 3

• y = -5/3x - 5

• y = -5/3x - 3