Camila leans a 18-foot ladder against a wall so that it forms an angle of 71^{\circ} ∘
with the ground. How high up the wall does the ladder reach? Round your answer to the nearest tenth of a foot if necessary.

Which logarithmic equation is equivalent to the exponential equation below? e^a=55(you will receive 34 points)

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

The trigonometric ratios sine and secant are reciprocals of each other