Could someone help me with this question

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.