27. tell whether the sequence is arithmetic. if it is, what is the common difference?

-15, -9, -3, 3, . .

a. yes; 3

b. yes; 5

c. yes; 6

d. no

It says factor each expression 49x-28?

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.