*this is an easy one **convert to rectangular: r*tanθ/secθ=2
y=2
y=½
x=2
x=½

y = 2

Step-by-step explanation:

r tan θ / sec θ = 2

First, simplify tan θ / sec θ:

r (sin θ / cos θ) / (1 / cos θ) = 2

r sin θ = 2

Remember that r cos θ = x and r sin θ = y:

y = 2

its 4 because 2 times 2 is 4, if you double the number two you get four

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.