When evaluating algebraic expressions: Must Show All Work 1) Evaluate : 4x + x - 10
when x= 3
2) Evaluate (4x)2 + 3x when x= -3
I
3) Evaluate 2x2 - 3x + 5
when
a) x= -2
b)x= 2
4)
Solve for x: (Hint: Reverse PEMDAS)
30 = 4x + 6

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )