sally has all dimes and quarters in her purse. there are 45 coins in total. she has $7.80. find how many dimes and quarters she has.

pls refer ro the top for answer

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

idk

step-by-step explanation:

5 + 8 +7 + 4 + 0 +1 = 25

step-by-step explanation: