John is 5 years older than mary. in 10 years, twice john's age decreased by mary's age is 35, and john's age will be
twice mary's current age. find their ages now
if xis mary's age now and y is john's age now, which system of equations could not be used to solve the problem?
y= x+5 and y + 10 = 2x
y=x+5 and 2(y + + 10) = 35
y= x + 5 and 2(y + 10) = x

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?