Write down an example of an equation that has: a. One solution
b. Two solutions
c. An infinite number of solutions
d. No solutions

a. 2x+3=7

b. x^2=9

c. x=x

d. x+4=x+3

Step-by-step explanation:

A) can be proved correct by x=2 as 2(2)=4+4=7

B)x^2=9 can be proven correct by either (3,3) or (-3,-3) as 3*3 is 9 and -3*-3=9 as well because two negatives equal a postive

C) x=x is the simplest equation w/ infinite solutions-you could have 2=2 or 4=4

D) There is no answer that can make this equation correct

219.00 + 159.00 = 378.00, the lowest cost of DJ & lights369.00 + 309.00 = 678.00, the highest cost of DJ & lights This means the lowest cost would be $434.00, and the highest cost would be $678.00, which written as our compound inequality:$378.00 ≤ x ≤ $678.00 If we wanted to write it as an interval format, it would look like:[$378.00, $678.00] (We use brackets because it's less/greater than or equal to those amounts.)