Jess mowed lawns for 12 weeks in the summer. she earned a total of $480 over that time. if she earned the same amount each week, what was her weekly earnings during the summer?

40

Step-by-step explanation:

she earns $40 per week

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5