12.) solve the inequality.
11d - 9 ≤ 15d + 3

a.) d ≥ - 3

b.) d ≥ 6/13

c.) d ≥ - 1 1/2

d.) d ≥ 3/13

ANSWER IS A.)

Step-by-step explanation:

move the variable to the left hand side & change it's sign:

collect like terms:

divide both sides of the inequality by -4 & flip the inequality sign:

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step-by-step explanation:

b and c

f(x) is   are being squared

g(x) is   increasing by 2

h(x) is adding .25 each time

k(x) is taking the square root

f(x) and k(x) are exponential functions