After spending $43 on groceries and $19 on book, mrs. groom had $16 left. how much money did mrs. groom have to begin with?

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.

M∠cbd=4x+52∘ m∠abc=8x−10∘\qquad m \angle abc = 8x - 10^\circm∠abc=8x−10∘ find m∠cbdm\angle cbdm∠cbd: