Answer asap‼️‼️
simplify the product using foil (3x-7)(3x-5)

a. 9x^2+6x+35
b. 9x^2-36x-35
c. 9x^2-36x+35
d. 9x*2+36x+35

remember foil = First Outside Inside Last

3x*3x =9x^2

3x*-5=-15x

3x*-7=-21x

-7*-5=35

add your terms together in standard form

answer is C

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west