Which of the following equations has infinitely many real solutions?
a) 4x + 1 = x-1
b) 4(x-5)=4x+20
c) 4(x-5) =4x-20
d) 4x+ 1 = 4x-1
which of the following equations has exactly one solution?
a) x + 1= x + 1
b) 7x= 7x
c) x + 1 = x + 2
d) 7x= 7
which of the following equations has no real solutions?
a) 14x-6=14x-6
b) 4(x+8) = 4( x+4)
c) 4x-8 =4x -28
d) 8(x-6) =8x-48

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points