The ratio 1:2 means there are twice as many dimes as there are quarters. An expression could be n=2d, n being number of quarters, d being number of dimes.
Answer:

Step-by-step explanation:
9) Since Alicia Martin's savings earns 6% quarterly for two quarters then:
⇒ Amount (A), Principle (P), rate (r) in decimal form, number of compoundings (n) a year and t, in year or its fractions.

10) Aubrey Daniel's case:

11) As for Angelo, similarly to Alicia.

12) Simpson's. For semiannual n=2

13) Jana Lacey amount:

Honestly just use desmos or mathyway
Answer:
IT would be B I believe
Step-by-step explanation:
f(x) = 3x + 391