Which is not a solution to the equation ?
a.
(–4, –7)
b.
(3, 14)
c.
(2, –1)
d.
(1, 8)

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom