Which pair of numbers has a greatest common factor of 1?

7,20
3,45
15,18
4,16

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.

Will mark brainlist what is the slope of the line passing through the points (-2, -8) and (-3,-9)? -7/5-5/71-1

Which shaded region is the solution to the system of inequalities? y y[tex]\geq[/tex]-x+1