Write each relation in standard form and then find the y-intercept for each relation: a) y = 5(x+10)^2 +7

In standard form, the relation is

The y-intercept is y = 507.

Step-by-step explanation:

Quadratic equation:

In standard form, it is written as:

The y-intercept is c.

a) y = 5(x+10)^2 +7

We open the binomial to write in standard form. So

In standard form, the relation is

The independent term, c, is 507, so the y-intercept is y = 507.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: